Padlock.



J. SUKUP.

PADLOGK.

APPLICATION FILED mm. 22, 1913.

1,089,981. Patented Mar. 10, 19m

WITNESSES INVENTOR ATTORNEYS COLUMBIA PLANOGRAPH C0..WAS)|1NQTON, u. c

UNKE JOHN SUKUP, OF CUDAHY, WISCONSIN.

PADLOCK.

Specification of Letters Patent.

Patented Mar. 10, 1914.

Application filed December 22, 1913. Serial No. 808,252.

To all whom it may concern Be it known that I, JOHN SUKUI, a subject of the Emperor of Austria-Hungary, and a resident of Cudahy, in the county of Milwaukee and State of WVisconsin, have made certain new and useful Improvements in Padlocks, of which the following is a specification.

This invention relates to pad locks, and one of the principal objects thereof is to provide a simplified and improved pad lock, and one which will be difficult of manipulation for opening, except by one familiar with its construction and operation.

A further object is to provide a pad lock which may be unlocked by manipulating the shackle from the outside, but which may not be unlocked by a key or other instrument, the lock, however, being provided with a key hole so as to present the appearance of an ordinary pad lock and thus mislead unauthorized persons attempting to pick the look, into believing the lock to be one of usual construction.

Another object of the invention is to provide a lock of the class described which will be durable, efficient in operation and inexpensive to manufacture.

With these and other objects in view which will become apparent as the description proceeds, the invention resides in the construction, combination and arrangement of parts hereinafter more fully described and claimed, and illustrated in the accompanying drawing in which like characters of reference indicate like parts throughout the several figures, of which Figure 1 represents a side elevational view of the lock. Fig. 2 represents a side elevational view of the lock with the cover plate removed, the parts being shown in full lines as unlocked, and in dotted lines as locked. Fig. 3 represents a vertical transverse sectional view taken on the plane indicated by the broken line 3-3 of Fig. 2.

Referring more particularly to the drawing, the casing comprises a rear face 5, which may be of any desired formation, but which is here shown as substantially key-stone shaped and said face is provided with a flange 6 extending around the perimeter, and a cover plate 7, the same shape as face 5, is connected thereto by means of a plurality of rivets or studs 8 extending through the casing.

On one of the studs below the center of the casing is centrally pivoted a lever 9, provided at one end with an upwardly extending arm 10 at an acute angle to lever 9, said arm provided at its upper end with a hook portion 11 adapted to coact with a hook portion 12 formed on one end of a substantially U-shaped shackle 13, the other end of which extends through an opening 1 1 in the top portion of the casing, and is pivoted as at 15 to the upper end of a link 16, the lower end of which is reduced to form a shoulder 17 on each side of a tongue which is pivoted at 18 in the bifurcated end of lever 9, opposite the end on which arm 10 is formed.

A leaf spring 19 formed of a strip of spring material bent upon itself, is interposed between the end of lever 9 adjacent link 16 and the lower wall of the casing, for normally holding the arm 10 in downward position, as illustrated in full lines in Fig. 2, the downward movement of said arm being limited by a lug 20 projecting from the rear face 5 of the casing.

The hooked end 12 of the shackle is adapted to pass through an opening 21 in the upper wall of the casing, and is adapted to engage with hook 11, as illustrated by dotted lines in Fig. 2, and in doing so, one wall 22 of opening 1% through which the pivoted end of shackle 18 extends, acts as a fulcrum for throwing the pivoted end of the shackle, and also the link 16, into the position indicated in dotted lines, and when inthis position, an elongated slot 23 formed in the lever, registers with a suitable opening 24 in the cover plate 7, said opening in this instance being shown as substantially 8- shaped.

In order to unlock the shackle from the position shown in dotted lines in Fig. 2, the shackle is forced inwardly, thus rocking the lever 9 on its pivot, and disengaging the hooked ends of the shackle and arm 10, and when the ends are thus disengaged, the shackle 13 while being held in its inward position, may be turned on its pivot 15 until the shackle is swung into the position shown in full lines in Fig. 2. A more inward pressure which might be given to the shackle 13 by persons unfamiliar with the lock, and at tempting to unlock the same, will not disengage the hooks, although it will separate them, however, upon release of the pressure, the hooks will be forced into engagement again by action of the spring 19, provided that the shackle is not turned on its pivot 13,

while the hooks are separated. When the lock is in locked position, the opening 24: registers with the slot 23, as stated before, and the insertion of a key or bent wire, or other instrument, into the hole could not operate to disengage the hooked ends of the shackle and arm.

Although I have described the preferred embodiment of my invention, I may desire to make such changes in its construction, combination and arrangement of parts as do not depart from the spirit of the invention and the scope of the appended claims.

I claim:

1. A lock comprising a housing, a lever pivoted in the lower end thereof, an arm extending at an acute angle from said lever and formed with a hook, a link pivoted at one end to the opposite end of the lever from the arm, a substantially U-shaped shackle pivoted at one end to said link, and extendin through an opening in the housing, the other end of the shackle provided with a hook adapted to engage the first said hook for locking the shackle, a spring in terposed'between the end of said. lever adjacent said link and the lower wall of the casing, said link provided with a slot adapted to register with an opening in said. casing, said shackle adapted to he moved in wardly and swung on its pivot while in inward position, for disengaging the hooks.

2. A lock comprising a housing, a lever pivoted therein, a link pivoted to said lever, a shackle pivoted to said link at one end, the other end of said shackle provided with a hook, an arm on said lever, said arm provided with a hook adapted to engage with the hooked end of the shackle for locking the latter, and a spring for normally holding said hooked ends in engagement.

3. A look comprising a housing, a lever pivoted therein, a link pivoted to said lever, a shackle pivoted at one end to said link, means on said lever for engaging said shackle, and means for normally holding said engaging means in contact with said shackle.

4c. A look comprising a housing, a lever pivoted therein, a shackle pivotally connected with one end of said lever, means on said lever for engaging the opposite end of said shackle for holding the same in closed position, and means for normally holding said engaging means in contact with the shackle.

5. In a lock, a pivoted lever, a shackle pivotally connected at one end with said lever, said shackle at its pivoted end being movable circumferentially of the adjacent portion of the lever, coacting means between said lever and shackle for locking the latter in locked position, and means normally holding said lever in locked position.

6. In a look, a lever, a shackle supported thereby, connecting means between said lever and shackle at one end of the latter, means carried by said lever for engaging the opposite end of said shackle, and means for normally holding said engaging means in contact with the shackle.

7 In a lock, a casing, a movable shackle, means combined entirely within the casing for normally holding said shackle in locked position, said shackle adapted to be manipulated to unlock without the use of a key, said casing provided with a key hole for giving the lock the appearance of a key operated lock.

8. In a lock, a casing, a lever pivoted therein, said lever having a hooked arm, a link pivoted to said lever, a shackle pivoted at one end to said link in spaced relation to said lever, said shackle provided with a hooked portion adapted to engage said hooked, arm, said shackle adapted to be moved inwardly, and when in this position to be swung on its pivot for disengaging the shackle from the arm, said link provided with a slot adapted to register with an opening in the casing when the lock is in locked position, to present the appearance of a key operated lock.

JOHN BzDUsTI-I, FRANK SUsEDIK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

